326 SUPPLEMENT. 
semiovata circumscutellari, gutta humerali, macula circulari (vel fascia recta) mediana alteraque majori 
apicali, nigris; subtus fascia prothoracis coccinea; thorace lateribus perparum rotundatis medio fere 
rectis, dorso subalveolato, grosse punctato; elytris passim subequaliter discrete sed confertim punctulatis, 
apice obtusissime rotundatis vel subtruncatis. 
Long. 5-6 lin. o¢ Q. 
Var. Macula elytrorum mediana cum macula apicali per suturam conjuncta. 
Hab Mexico, Sonora (coll. Bates), Ventanas (Forrer), Alamos (Buchan-Hepburn). 
Tylosis sellata (p. 81). 
This species must be withdrawn, the Sonora example referred to it proving to be a 
distinct species, and being included in the foregoing description of 7. angusticollis. 
4. Tylosis suturalis. 
Supra quam affines crebrius punctata, elytris undique alveolatis ; thorace sicut in TJ. puneticolli, oblongo- 
ovato. Nigra; thorace et elytris coccineis, illo punctis nigris variabilibus 2 vel 4 vel5; elytris vitta sutu- 
rali nigra ante apicem semper terminata. 
Long. 6-7 lin. 9. 
Hab. Mexico, Guanajuato (Duges in coll. Sailé). 
Named 7. suturalis, Sturm, MS., in the Sallé collection. 
The sutural vitta is very variable in extent; in its fullest development it reaches the 
base, and is of the width of one third the elytron, and at its feeblest it is reduced to a 
narrow line along the middle portion of the suture; in some examples it is entirely 
wanting, and unless more than two spots are then present on the thorax, the species 
would with difficulty be distinguished from T. oculata. 
5. Tylosis jimenezi. 
Tylosis jimenezt, Dugés, La Naturaleza, iv. p. 186, t. 6. fig. 11’. 
Hab. Mexico, Guanajuato, Silao, Leon! (Dugés), Lerdo (Flohr), Saltillo in Coahuila 
(Dr. Palmer). 
A large species (reaching in some examples a length of nearly 10 lines), distinguished 
by its broad, strongly rounded thorax, the middle of the sides of which is sometimes 
angulated, or even forms a short conical tubercle. The punctuation of the elytra is very 
coarse near the base, and minute and confluent towards the apex. ‘The elytra are more 
variegated with black than in 7. puncticollis, the spots being variable: but in all the 
varieties the species may be distinguished by the apex of the elytra being of the red 
ground-colour, and the subscutellar and humeral spots elongated. 
H:GEA (to follow the genus Tylosis, p. 81). 
Gen. Tylost proxime affinis ; differt preecipue thoracis lateribus utroque sexu tuberculo acuto armatis; corpore 
magis elongato ; metasterno valde convexo. 
Closely resembling Zylosis in colours and markings as well as in structure, but 
